improvisatorial
adjUS /ɪmˌpɹɑvɪsəˈtɔɹiəl/
Etymology By surface analysis, improvise + -atory + -al.
1
Synonym of improvisatory.
- These contests were partly of an improvisatorial character; and in an age when public readings and recitations were in vogue, […] success of this kind was highly valued.1853, Robert William Browne, A history of Roman classical literature, page 443: